Package winding machine



March 13, 1934. J. o. MCKEAN PACKAGE WINDING MACHINE Filed Dec. 23, 1931 2 Sheets-Sheet l INVENTOR ATTORNEYS March 13, 1934. J 0 MCKEAN PACKAGE WINDING MACHINE 23, 1951 2 Sheets-Sheet 2 L LITIIIII-IIIIaII'II IIIll-lll-lll llllllli l l" Filed Dec.

INVENTOR A'ITORNEYS Patented Mar. 13, 1934 PATENT oFF cE,

1,959,990 I PACKAGE WINDING momma John- 0. McKean, Westfield, Mass, assignor to Foster Machine Company, Westfield, Mass., a corporation of Massachusetts Application December 23, 1931, Serial No. 582,773 4 Claims. (01. 242-18) This invention is directed to package winding machines of that type in which the packages are wound by their frictional surface contact with winding rolls.

The object of my invention is to provide a novel and simple winding mechanism which will effectually break up the ribbon wind on the package, 1. e., the tendency of the yarn to lay one turn upon a preceding turn, thereby causing undesirable lumps or protuberances to be produced in the wound package.

My invention comprises generally a package winding mechanism in which thewinding roll shaft is driven at a constant speed and the traverse guide actuating cam shaft is driven at a variable speed.

My invention comprises particularly a belt driven expansible pulley located in,the drive for the traverse cam shaft and means exerting added tension on 'the belt at intervals to expand the pulley and thereby increase its speed by decreasing its effective diameter.

My invention comprises more particularly means for moving the expansible pulley bodily away from its driving pulley at intervals to increase the tension on the belt for extending the expansible pulley and thus add to its speed.

My invention also comprises a common motor having a separate drive for the winding roll and earn. shafts, a variable speed control being provided for the cam shaft drive, said control being operated from the winding roll shaft.

A practical embodiment of my invention is represented in the accompanying drawings in which: Fig. 1 represents a detail side view partly in section of a package winding machine with my improved winding mechanism applied thereto;

Fig. 2 represents a detail end view of the same; Fig. 3 represents a detail side view of the expansible pulley which controls the speed of the traverse cam shaft, the pulley being shown in its contracted position; and Fig. i represents a similar view with the expansible pulley shown in its extended position. The winding machine frame is denoted by 1 and in suitable bearings on this frame are rotatably mounted the shaft 2 of the winding roll 3 and the shaft 4 of the variable speed traverse cam 5. The traverse guide 6 is operated by the cam 5. The windingroll shaft 2 may be driven at a constant speed by any suitable means, such for instance as the electric motor 7, the shaft 8 of which is shown as provided with a double pulley 9 which drives through belts 10, the double pulley 11 on the winding roll shaft.

The means which I have shown for imparting a variable speed to the traverse cam shaft 4 and thereby to the traverse guide 6 is as follows:

Arock shaft 12 is mounted in suitable hearings on the frame 1 in alinement with the cam shaft 4. 0 A shaft 13 is rotatably mounted in suitable bearings on a swinging support 14 carried by the rock shaft 12, which shaft 13' drives the cam shaft 4 through the intermeshing gears 15, 16. The shaft 13 is driven at a variable speed from the 5 shaft 8 of the motor '7 through a belt and pulley connection, one of which pulleys is of the normally contracted expansible type. In the present instance the motor shaft 8 is provided with a drive pulley 1'7 of the V-groove type, which pulley drives the V belt 18 which also passes around a normally contracted expansible pulley of the V- groove type on the shaft 13. This expansible pulley comprises a fixed member 19 fast on the shaft 13 and a spring pressed member 20 slidable on the shaft 13 and interlocked to rotate with the fixed pulley member 19 by the pins 21 carried ,by said fixed pulley member. The spring which normally contracts the expansible pulley is denoted by 22, which spring is interposed between 3o the movable pulley member 20 and a collar 22* fast on the shaft 13.

The constant speed winding roll shaft 2 is provided with a worm 23 which meshes with a worm gear 24 carried by a shaft 25 mounted as in suitable hearings on the frame 1. This shaft 25 is provided with a pulley 26 which drives through a belt 27, a pulley 28 on a shaft 29 mounted in suitable bearings on the said frame. This shaft 29 is provided with an eccentric cam 30 which engages the rollers 31, 32 at the lower end of. a rod 33, the upper end of which rod. is attached to the swinging support it.

The weight of the swinging support 14 with the parts carried thereby is substantially counter-- balanced by a spring as extending between the frame 1 and an arm 35 projecting rearwardly from the rock shaft 12.

In operation: As the winding roll shaft 2 is rotated from the motor 7 it will, in turn, rotate the eccentric shaft 29, causing the rod 33 to slowly rock the swinging support 14 which carries the normally contracted expansible pulley 19,. 20, carried by the shaft 13 which is geared to the cam shaft 4 and which expanding pulley in turn is driven from the motor 7 through the pulley 17 and belt 18.

As the swinging support 14 is moved upwardly, increased tension is imparted to the belt 18, which increased tension will cause the pulley 19, 20 to I10 pulley is at the limit of its extended position the end of the hub of the member 20 comes in contact with the collar 22 fast on the shaft 13. This prevents the pulley from being extended so far.

as to allow the V belt 18 to fall or drop or be pulled between the fixed and slidable members of the pulley to a point below the bevel where the belt would become inoperative and possibly be destroyed.

It will thus be seen that a common motor separately drives the winding roll and cam shafts. It will also be seen that by providing an extensible pulley in the cam shaft drive and employing means for extending the pulley at intervals I am enabled to produce a simple and efiective means for accomplishing the result sought.

It is evident that various changes may be resorted to in the construction, form and arrangement of the several parts without departing from the spirit and scope of my invention, and hence I do not intend to be limited to the particular embodiment herein shown and described, but

What I claim is:

1. In a package winding machine, a winding roll shaft, a traverse cam shaft, means for driving said traverse cam shaft at a. varying speed including a belt and its pulleys, one of the pulleys being expansible, a geared connection between the expansible pulley and one of said shafts, a movable support for the expansible pulley and means operated from the winding roll shaft for moving said support and its expansible pulley away from the other pulley at intervals to increase the tension on the belt for extending the expansible pulley.

2. In a package winding machine, a traverse cam shaft, means for driving it at a varying speed comprising a belt and its pulleys, one of the pulleys being expansible, a rock shaft mounted in alinement with the cam shaft, a swinging support on the rock shaft, a shaft for the expansiole pulley rotatably mounted in the swinging support, gearing connecting the last named shaft with the cam shaft and means for rocking said support to increase the tension on thejbelt for extending the expansible pulley.

3. In a package winding machine, a winding roll shaft, a traverse cam shaft, means for driving said traverse cam shaft at a varying speed comprising a belt and its pulleys, one of the pulleys being expansible, arock shaft mounted in alinement with the cam shaft, .a swinging support on the rock shaft, a shaft for the expansible pulley rotatably mounted in the swinging support, gearing connecting the last named shaft with the cam shaft and means operated from the winding roll shaft for rocking said support to increase the tension on the belt for extending the expansible pulley.

4. In a package winding machine, a winding roll shaft, 9. traverse cam shaft, a common motor 

